As for "closed" groups - FKK has one of the largest and most active naturist / naturist Facebook groups. That group has over 7,000 people in it and it

In "secret" groups, only members can see the group itself and the posts. It's invisible to everyone else and cannot be found in hunts. You can only join if another group member or admin adds you to it. The good thing about secret groups is the fac read more...